Improvement in looms for weaving tape



3 Sheets-Sheet 1.

J. DUCKWORTH.

Needle Loom.

Patented Nov. 9, 1869.

we nonms versus :0" Mm'o-m-mo, msumsnm, u. c.

I 3 Sheets-Sheet 2. J; DUCKWORTH.

Needle Loom.

Patented Nov. 9, 1869.

Wi'ihwaw: I

0., moron-mm, wAsmxmou, n. c.

3 Sheets-Sheet 3. Q J. DUCKWORTH.

Needle Loom.

No. 96,564. V V Patented Nov. 9,1869.

l JAMES DUcKWon'rH, 0F PITTSFIELD, MASSACHUSETTS, ASSIGN'OR .T'o

'DUGKWORTH & sous, OF SAME PLACE.

\ Letters Patent No. 96,564, dated November 9, 1869.

Il IMIE'ROVENIEINTI'.v IN LOQMS FOR WEAVING- TAPE, 8cc.

iTo all whom it may concern j i Be it known that I, Jluuns DUCKWORTH, ofPittsfield, in the county of Berkshire, and State of Massa-- "{chusetts,have invented certain new and useful Im provenie-nts in Looms for\Veaving Tapes and other narrow wares; and I do hereby declare'that thefollowing is a full and correct description thereof, reference being hadto the accompanying drawings and the let-- used, the comb being socombined with the mechan ism of the loom as to enter the web and moveforward to beat up the filling-thread, and then retreat from the web andmove backward outside of the web until it has completed its backwardstroke, when it again enters the web and moves forward to beat up thefilling-threads, leaving'the shed clear during the whole back stroke ofthe comb-beater for the operation of the filling-thread carrier, thecomb-beater during that time being entirely removed from the web.

My invention also consists in a combination of mechanism whereby thebelt-shipper is released when the filling-thread breaks, for the purposeof stopping the loom.

But more particularly to describe my. invention, I will refer to theaccompanying drawings, of which Figure 1 is a plan view of the loomFignre 2, a side elevation with a side flame removed;

Figure 3, an end view; I

Figure 4, a transverse section through the red lines a: x, figs. 1 and2; and 7* Figures 5, (i, and 7, detached-views, illustrating theoperation of the filling-thread carrier, looping-needles,

and comb-beater.

Letter ('0 represents the frame of the loom.

b, the yarn-beam, provided with the usual friction band.-

b' c c, the take-up rollers.

The leaves of heddles d move'up'and down in slides in the bracket-framesd d", and are connected to a series of treadles, (1, one for each leafof heddles.

A horizontal rotating shaft, ll, parallel with theside of the loom,carries the cams d, that move the heddles up and down to form and shiftthe shed.

The shaft (1* also carries a worm, d, which imparts v a slow continuousmotion to the take-up rollers by means of a worm-wheel,dfiihst to theshaft of the lower take-up roller. The surfaces of one 'or both of thetake-up rollers are roughened to aid in grasping the cloth.

The Schedule referred to in these Letters Patent and making part of thesame.

' The shaft d has also upon it aworm wheel, cl", by which it receivesits motion from a worm, 0 upon the rotating shaft 0, which latter isconnected with and driven from the main driving-shaft f by mitre-wheelse e. e

The thread-carrier g is a blunt eye-pointed needle, secured byaset-screw, g, in a socket in front of a cross-head, which reciprocatesin slides g motion being imparted to it from the main driving-shaft by acrank, g5, fast to one end of the main driving-shaft j, which isconnected to the cross-head by a link, g.

A spool or bobbin, 7:, upon which the filling-thread is wound, is placedupon a spindle, h, upon which it turns freely, the thread passingthrough the eye-guide h, thence around the grooved tension-pulley h,thence through an eye, It, in a thread protector, 71 ,thence over thehook-guide h, and through the eye-guide It, upon the cross-head whichcarries the filling-thread carrierrto the eye ofthe-filling-tl'neadcarrier, through which it passes and connects with the fabric in theusual manner. r

An adjustable friction is applied to the tension-pulley h, by means ofan adjusting-screw, h, an adj nsting-spring, I19, a washer, h", andfriction-pads t t, in

' the form of washers of felt or other suitable material at each side ofthe pulley. v

The tlu'ead-protector 71- is a part of the mechanism for stopping theloom-when the filling-thread breaks. It is a wire suspended from thefilling-thread between the tension-pulley and the thread-carrier, andplays up and down loosely in guides 'i i directly over the jaws t 41formed by the bent ends of the two levers '5 'i arranged like a'pair offorceps, upon afulcrum-pin, '1').

One of these levers, i, has a forked arm, which embraces an eccentricfast to the drivin -shaft, and is thereby vibrated once for everyrevolution of the driving-shaft; and the-otherlever, i is bent downward,and by means of a pin, t projecting from it, looks theslidingbelt-shipper 47, which has a pin-hole placed in it for thatpurpose, insuch position that when the belt-fork t, attached to theshipper, is moved from the loose pulley i tothe tight pulley i againstthe action of the spiral spring t, the pin 1' upon the lever drops intothe hole by reason of the weight of the arm of the lever t, to which itis attached.

The jaws of the two levers beneath the thread-pro'- tector are placed ata little distance apart, so that the vibration of the lever 11 will notmove its jaw, if, sufficiently to come in contact with the jaw i of thelever t", which looks the belt-shipper, but the distance between thejaws is so small that whenever the end of the thread-protector descendsbetween them by reason of the breaking of the filling-thread in the webor for want of sufficient tension upon the filling-thread to keep itsuspended above the jaws, the moving jaw presses it against the oppositejaw of the locking-lever, in the manner of a' pair of forceps seizingawire,

which has the effect to raisethe looking-arm of the lever and releasethe belt-shipper.

A handle, 7', is placed upon the belt-shipper for convenience of movingit to start the loom.

The latched looping-needles k k are placed, one at each edge of the web,and are mounted upon a forked rocking-arm, k fast to the rock-shaft 70the rocking motion being given to the shaft by means of an ec-. centric,It, upon -the rotating shaft 0, and a forked arm, k fast to therock-shaft. v The looping-needles k k are curved correspondingly to thecurve of their motion by the rocking-arm, and are formed with a hook orbarb upon their ends to seize the loop of needle-thread projectedthrough the shed by the thread-carrier, and are also each provided witha latch, 111, (like latched knitting-needles,) operated by the loops ofthread upon the needles;

, The comb-beater for beating up the filling-thread is an instrumentconsisting of aseries of fiatmetal blades, 12, likethe teeth of a comb,secured by a clamping setserew in a channel or mortise in the horizontalpart a of a bent lever, a, which latter has for its fulcrum a crank-pin,n, projecting from the side of the rotating circular plate n, which isfast to the end of the rotating shaft 0.

The bent lever a has a tail in which is a curved slot, a which playsfreely upon the neck of a bolt, 12", screwed into a stud projecting fromthe side frame.

The side of the rotating disk is smoothed to act as a guide to the sideof the bent lever which is in contact with it, in order to keep theteeth of the comb accurately in their proper planes of motion whenentering the web.

The comb-beater is lifted to enter the web, moved forward in the web tobeat up the filling-thread, and then withdrawn downward from the web andmoved backward beneath the web out of the way of the filling-threadcarrier by means of the crank-pin n and bent lever in, the curvedguide-slot in the tail of the bent lever and the pin upon which itplays, serving to keep the comb-teethin their required verticalposition.

The number of teeth in the comb-beater may be varied to suit the web,the clamping-screw and mortised clamp being provided for that purpose.

In the use of the comb-beater it is desirable to have the warp-threadslie in fixed vertical planes, in order that the comb shall enter the webproperly, and therefore a web-guide, 1), composed of similar comb-teeth,arranged in the same manner ina clamp-frame, p, is attached to the loomjust in front of the heddles by a screw, the comb-teeth of the guidebeing secured by a clamping-screw, 1).

The comb-teeth of the web-guide being arranged in the vertical planes ofmotion of the teeth of the comb-beater, when the latter rises to enterthe web just in front of the web-guide, the warp-threads are divided andproperly placed for the teeth of the combbeater to enter the web betweenthem.

loop of filling-thread looped around both of the-loop- I i lug-needles,which immediately begin to move back,

drawing the loop of filling-thread with them, as in fig. 6, when thecomb-beater enters the web, as in fig. 7, and follows thelooping-needles to the fell, beating up the filling-thread, and thenretreats downward from the web and finishes its stroke below the web,out of theway of the filling-thread carrier, which, latter has movedinto the shed to carry in another loop of filling-thread. Thelooping-needles then move forward through the loop of filling-threadwhich has been beaten up and confined in the web by shifting the shed,and the loop, being around the looping-needles cause the latches to turnover as they pass beyond the loops, leaving them upon the shank of thelooping-needles, and when the latter move back again with a new loop offilling-thread, they draw it through the preceding loops, which slipover the barb, the latches having been thrown over the barb by the loopsthat are thus cast off.

In commencing to weave; the latches 0f the looping-needles should bethrown back to enable them to take the first loop of filling-thread, andafterward they will be opened and closed by the loops themselves.

It is not necessary to use the looping-needle at the edge of the webnext to the filling-thread carrier, because the web holds thefilling-thread at that side, but it is preferable to do so on account ofuniformity of the selvage and facility of working.

A horizontal bar, 11, secured at one end to the frame passes under theweb and looping-needles, and serves to support and steady theweb andtheends of the looping-needles when the comb heats up, giving greatercertainty to the operation of the looping-needles.

I claimv 1. In combination with the filling-thread carrier, thecomb-beater for heating up the filling-threads, having the mode ofoperation substantially as herein described.

2. In combination with the belt-shipper, the threadprotector and thelevers and cams which constitute the mechanism for releasing thebelt-shipper, to stop the loom, substantially as described.

JAMES DUOKWORTH.

Witnesses:

E. M. W001), JOHN C. DUCKWORTH.

